Railway draft-gear.



G. 0. NEWS. RAILWAY DRAFTGEAR.

APPLICATION FILED OCT. 18, 1915.

Patented Feb. 5, 1918.

2 SHEETS-SHEET I.

. INV

AITI'TGRNEY G. a. LEWIS.

RAILWAY DRAFT GEAR.

APPLICATIQN FILER QCI. 1B, 1915. l gfi im Patented Feb. 5,1918.

2 SHEETS-SHEET 2. V

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GOODRICH Q. LEWIS, OF WHEATON. ILLINOIS, ASSIGNOB, T0 WILLI H. MINER, 01F CHAZY. NEW YORK. w

RAILWAY DRAFT-GEAR.

Specification of Letters Patent.

llaitented new. a, tote.

Application filed October 18. 1915. Serial No. 56336.

To I hom it may concern:

,full. .cl ar. conci e. and exa t description.

referen e being bad to the a companylng drawings. forming a part of this specifi ation. l

This inventionrelates to improvements in railway draft gears.

Th obje t of the invention is to provide a g ar for railway draft rigging having a high fri tion capacity under butt and high spring capacity only. under draft.

Another object of the invention is the provision of a draft gear having the qualities above enumerated so arranged as to permit the use of a horizontal yoke.

In the drawing forming a part of this specificatirm. Figure 1 is a vertical. longitudinal sectional view of a draft rigging showingmy improven'ient in eonnectioi'l therewith. Fig. 2 is a horizontal. longitudinal sectional view of the structure illustrated in Fig. 1 and taken on the line 2-2 of the latter. Figs. 3 and t are transverse. verti al sectional views taken on the lines 33 and -t-t of Fig. 1. And Fig. 5 is a perspective view of one of the stop castings employed with my construction.

In said drawing. -10 denote the center or draft sills to which are secured the counterpart stop astings A-A. each casting A. being provided with a pair of upper and lower rearstop shoulders 11--11. a pair of upper and lower front stop sl'ioulders 12-12, an upper intern'iediate shoulderl-fiand a lower intern'iediate shoulder 14-.intermediateshoultiers l3 and Hbeing vertically spaced and also out of alimum-ntas 'learlyappears from Fig. 5. Mounted between the draft members is a stationary friction shell 15. the latter having an integral front follower section 16, the latter at the lower end being provided with lateral extensions or shoulders 17 17. On its lower side. the cylinder is provided with longitudinally extending side flanges o webs 18-18. the ear edges of which are flushwith the r ar end of the cylinder 15 and are adapted to abut the lower, intermediate shoulders 14. The front follower 16 engages the front; stops 1212, as will.

be apparent. and tlie upper intermediate stops 13 engage .the rear face of the follower 16 at thetop thereof. In this manner. the

friction cylinder 15 is prevented from for-- ward movement by engagement with the four stops 12-12 and is prevented from lPttlWtlItl movement by the two u per stops 13-13 and the two lower. intermediate stops 14-44, thereby holding the friction cylinder stationary. I

(in account of the construction. as above described. it is apparent that the friction cylinder may be inserted between the sills from below without interference with anyof the stops. Mounted within the friction cylinder 15 is a plurality of friction shoes 1 wedge 20 and anti-friction rollers21. At the rear of the friction shell and normally in engagement therewith. is a movable spring front follower the latter having an an: nular extension :23 on its front face which fits within the friction cylinder 15 and is guided by the latter. Between the follower :32 and the shoulders 2-1 on the friction shoes is a preliminary spring and the friction shoes. wedge rollers. prelin'iinary spring and follower are held togethe in assembled relation by means of a retaining bolt 26. A rear follower -27 normally engages the rear stops 11 and between said follower and the follower '22 are vertical. t in arranged main springs 28-28. each of the latter compris ing an outer and an inner coil. the two sets of springs being separated by means'of a spa er '29. the latter also serving to limit the amount of col'npression of said springs,.as

will be understood and as clearly appears from Fig. The upper set of stops on each, casting are spaced from the lower set of stops and thereby provide a longitudinally extending channel or groove within which is adapted to he received one arm 30' f horizontal yoke. the forward ends of the yoke arms bein keyed to-a draw-bar 31, asclearly appears in 2. As will be apparent, the yoke is supported and guided on the upper flanges of the lower stops 11. 12 and 14. lln assembling the draft rigging. the

yoke is first placed in position by inserting the same endwise, then the friction shell with the friction n'iechanism preliminary spring and follower 2'2 a sembled therewith is inserted from the bottom of the sills. then the rear follower Hand finally the springs and spacer 29. The frictionshell followers,

'shell are then supported by means of a saddle plate 32 bolted to the lower flanges of the draft sills 10.

In operation, upon inward movement of the draw-bar, the wedge and friction shoes are moved inwardly relatively to the stationary shell 15, which movement is resisted at first by the preliminary spring 25. After the preliminary spring has been compressed, further inward movement of the friction shoes is resisted by the twin sets of main springs acting through the follower 22. It will therefore be seen that upon buff, the action is graduated and reaches an ultimate high friction capacity. .In draft, the follower :22 is held stationary by the shell 15, and consequently none of the friction elements comes into play, but the rear follower 27 is pulled forwardly by the yoke, thus com ressing the springs 28 and thereby provi ing a heavy spring action only, in draft. i

. I claim:

1. In a draft rigging, the combination with a relatively short stationary shell, friction elements cooperable therewith under buff, and twin arranged springs arranged to resist movement'of said friction elements under butt, of a horizontal yoke acting to compress only said springs, under draft, said springs beinglinsertible and removable while the shell and friction elementsare in position.

2. in a draft rigging, the combination with draft sills, stop castings secured to the inner faces of said sills, each of said castings being provided with spaced upper and lower, front and rear stops and also intermediate stops, of a friction shell insertible between said castings and adapted to engage the front stops thereof, said shell remaining st.a tionary in both buff and draft, friction elements cotiperable with said shell, a yoke, the

arms ofwhich pass between said shell and said castings, said arms being guided between the sets of upper and lower stops. and springmeans cooperating with said friction elements 3. As an article of lmllitlfuttlll't, a stop casting for draft riggings, said stop casting having spaced upper and lower sets of front and rear stop shoulders, and spaced upper and lower stop shoulders intermediate said front and rear stop shoulders, said intermediate stop shoulders lltlllfl out of rertical alinement whereby to permit the insertion of a friction shell vertically between two of said step castings when the latter are in position, the spaced upper and lower front, rear and intermediate stop shoulders permitting the employment of a horizontal yolt'e slidably mounted therebetween,

4. A stop casting for draft rigging and the like having spaced upper and lower rear stop shoulders, spaced upp r and lower front. stop shoulders, and spaced upper and lower stop shoulders intermediate the front and rear'stop shoulders, the intermediate stop shoulders being out of alinement; with each other, the l()ll,1ll'll(llll:ll space between the upper and lower sets of stop shoulders forming a guide for a horizontally slidable member.

In a draft rigging for railway cars, the combination with draft members having stop castings permanently secured thereto, of a stationary friction shell mounted between said stop castings and insertible vertically therebetnasen, friction elements cooperable with said shell under bull only, main springs at the rear of said shell, and a horizontal yoke slidably mounted between said friction shell and said st op castings.

In witness that I claim the foregoin have hereunto subscribed my name this 2 5th day of Sept, 1915.

G ()ODRlCl-I Q. LEW] S. 

